Cap for jars and the like



July 12, 1932. W EL 1,867,167

CAP FOR JARS AND THE LIKE:

Filed April 18. 1950 7 I &v TOR ATTORNEYS Patented July 12, 1932 PATENTOFFICE AUGUST MITCHELL, OF NEW YORK, N. Y.,

ASSIGNOR TO SCOVILL MANUFACTURING COMPANY, OF WATEBBURY, CONNECTICUT, ACORPORATION OF CONNECTICUT CAP FOR Jens AND THE LIKE Application filedApril 18, 1980. Serial No. 445,246.

largely used for packaging fruits, cosmetics and the like are providedwith an open mouth through which the contents of the jar may be removed.It is desirable to provide these jars with a closure cap which maybereadily and easily applied to the jar and locked in rigid relationtherewith, but at the same time may be readily removed'therefrom. Foreconomy in manufacture, it is further desirable that these caps be of asfew parts as possible and that the locking means he of simple characterso that the caps can be cheaply made and assembled, and will besufliciently rigid and strong to adapt them for the use for which theyare intended. It is furthermore desirable that the means by which thecaps are secured to the jars shall be concealed so as to make a neat andattractive package.

It is the especial object of the present invention to produce a two partcap for glass jars and the like which is provided with a lockingshoulder in which the parts of the cap are rovided with concealed meansfor locking tliem to ether, and in which the locking means by w ich thecap is secured in position on the jar is also concealed.

A further object of the invention is to produce such a cap the parts ofwhich can be formed of drawn metal so that the cap can be cheaplyproduced and assembled, thus providing an economical structure.

.A cap embodying the invention in its preferred form is shown in theaccompanying drawing, in which Figure 1 is'a side view of the improvedcap applied to an open mouth container, such as a jar, the latter beingshown in dotted lines;

Figure 2 is a top view of the cap shown in Figure 1;

Figure 3 is an inside view of the cap of Figure 2;

Figure 4 is a sectional View, drawn on an enlarged scale, of the cap ofFigure 3, the

section being taken on line 4-4 of that figure,

and

Figure 5 is a detail of the cap.

Referrin now to the drawing, the cap selected to illustrate theinvention is shown in its preferred form, the jar being of glass. Itwill be understood, however, that as to certain of ,its'features the capmay be used with containers or jars other than glass jars, such forinstance as porcelain or metal.

Referring to the-construction illustrated, there is provided a glass jar1 having an open mouth, which is closed by a cap structure indicatedgenerally by the numeral 2. This jar is provided with a locking shoulderin the form of a screw thread 3.

Cooperating with this jar is a cap which in the particular constructionillustrated is of two pieces only, the parts of this cap being' of lightmetal and being formed by drawing the metal to the required shape. Asillustrated, this cap includes a domed top 4 which terminates in anarrow flan e 5, from which depends a skirt 6. This s irt is providedwith a locking device whidh cooperates with the thread 3 of the jarmouth 1 and, as shown, this locking device is in the form of a screwthread 7 produced by forming in the metal of the skirt 6 of the cap.This forming in of the metal to produce the thread 7 leaves outwardlyshowing corrugations or depressions 8. In accordance with the invention,means are provided for concealingthese corrugations.

While these means may be of various characters, in the particularconstruction illustrated there is provided an open ring 9 which issubstantially the dimension of the. skirt 6 of the cap and is providedwith a slightly' inturned flange '10, which laps over onto the flange 5of the cap, before referred to. Thus the ring conceals the depressionsor corrugations 8 in a very simple and efi'ective manner.

In accordance with the invention, means are provided for rigidly lockingthe cap and ring together, and these means will be such as to beconcealed when the two parts of the cap have been assembled. In thearticular construction illustrated, this is e ected by providing one ormore I "ing tabs 11, two such tabs being shown in Figure 3,although itwill be understood that under some circumstances one of these tabs'maybe omitted. These tabs are convenientl formed by providing a littleexcess 'meta on the flange of the ring, which is bent downwardly andinwardly so as to lie under the flange and be concealed thereby. Thistab, or tabs where more than one is used, is shaped to pass throughslits 12 formed at the juncture of the'dome 4 of the cap and at theinner edge of the flange 5, and after the tab has been passed throughthe slot it may be bent u Wardly under the'shoulder 13, formed by t eedge of the dome, and then flatwise against the inside of the domed top4, as indicated at 14 in Figure 4.

It will be seen that when the parts are assembled the flange l0 entirelyconceals the slots 12 and also conceals the locking tab or tabs, so thatthe cap when finished has the appearance of a one piece cap and at thesame time conceals the locking means by which the cap is secured to thejar. construction has the further advantage that the cap proper may befinished in one way and the ring in another, where a contrasting cap isdesired by the user.

It will be understood that the Word jar as used in the specification andclaims is intended to cover open mouthed containers of variouscharacters adapted for the purpose of the invention. 1

While the invention has been described in its preferred form, it will beunderstood that certain changes and variations ma be made in thespecific structure of the loc ing device by which the cap is locked tothe jar and by which the two parts are locked together without departingfrom the invention as defined in the appended claims.

What I claim is: p

1. A jar having a mouth and an exterior locking shoulder, a metal capcomprising two parts only, one part providing a cover for the jar andhaving an outwardly extendin peripheral flange and also having a skirt aapted for association with the jar and provided on its interior surfacewith cooperating locking devices produced by forming in the'metal of thecap, the other part .of the cap comprising an open ring enclosing theskirt and concealing the same and having a concentric inwardly extendingperipheral flange extending over the cover flange, and concealed meanscarried by the ring and bearing against the inside of the cover forrigidly locking the cap and ring together.

2. A jar having a mouth and an exterior locking shoulder,a metal capcomprising two parts only, one part providing a cover for the jar andhaving anoutwardly extending peripheral flange and also having a skirtadapted for association with the jar and provided on its interiorsurface withcooperating lockentering the slit in the cap and bent in111K181 the cap face and concealed by the flanges on the ring and cover.

In testimony whereof, I have hereunto set In hand. v

y AUGUST MITCHELL.

This

